What is the value of the expression 8-^2 A. 64

B. -16

C. 1/64

D. 1/16

Iam trying to solve a linear equation for the shoe size of someone 84" tall taking into consideration example 1 is 69" tall with a shoe size of 9 and example 2 is 72 inches tall with a shoe size of 11. i understand that the equation should be y=mx+b and that on the graph the answer is (3,2) but i just don't understand how to create the equation to solve for 84-inches and 60-inches tall questions. after two days, i need .

How to do this , and can some one explain

Which expression is equivalent to -5(3x - 6/7)